How do I find out, using javascript, what software opened and running my application?

private void AboutButton_Click(object sender, EventArgs e)
        {
            var aboutdialog = new Form2(this);
            aboutdialog.Show();
            this.Hide();
        }

Form1 _parentform;
public Form2(Form1 parent)
        {
            _parentform=parent;
            InitializeComponent();
        }



private void CloseButton_Click(object sender, EventArgs e)
        {
            _parentform.Show();
            this.Close();
        }

<!-- JSF -->
<dependency>
    <groupId>com.sun.faces</groupId>
    <artifactId>jsf-api</artifactId>
    <version>${jsf.version}</version>
</dependency>
<dependency>
    <groupId>com.sun.faces</groupId>
    <artifactId>jsf-impl</artifactId>
    <version>${jsf.version}</version>
</dependency>

<dependency>
    <groupId>com.sun.facelets</groupId>
    <artifactId>jsf-facelets</artifactId>
    <version>${facelets.version}</version>
</dependency>

<!-- Faces Servlet -->
<servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

<!-- Faces Servlet Mapping -->
<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsf</url-pattern>
</servlet-mapping>

<!-- Use Documents Saved as *.xhtml --> 
<context-param>
    <param-name>javax.faces.DEFAULT_SUFFIX</param-name>
    <param-value>.xhtml</param-value>
</context-param>

<!-- Special Debug Output for Development -->
<context-param>
    <param-name>facelets.DEVELOPMENT</param-name>
    <param-value>true</param-value>
</context-param>

<welcome-file-list>
    <welcome-file>login.jsf</welcome-file>
</welcome-file-list>

<faces-config>      
    <application>
        <view-handler>com.sun.facelets.FaceletViewHandler</view-handler>    
    </application> 
</faces-config>

url="$1"  ## This holds the %URL% paramter set in Eclipse
open -a "Google Chrome" $url

set url=%1  
start chrome %url%